Lamp-shade



(No Model.)

S. R. KNEELAND.

LAMP SHADE. No. 386,475. Patented July 24, 1888.

OOOOOOOOOOOOO N PETERS, Pholo-Lflhngnphur, Washington. D. C.

NiTED TATES ATENT Fries.

LAMP-SHADE.

SPECIFICATION forming part of Letters Patent No. 386,475, dated July 24,1888.

Application filed January 10, 1888. Serial No. 260,317.

To all whom it may concern:

Be it known that l, Svnvawns R. KNEE- LAND, of Boston, in the county ofSuffolk, State of Massachusetts, have invented a certain new and usefulImprovement in Lamp- Shades, of which the following is a descriptionsufficiently full, clear, and exact to enable any person skilled in theart orscience to which said invention appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which Figure l is a side elevation of my improvedshade; Fig. 2, a vertical section of the same; Fig. 3, a bottom planview showing the construction of the annular flange on the metal top;Fig. 4, a top plan view showing the construction of the glass bottom,and Fig. 5 an enlarged sectional view showing certain de tails ofconstruction.

Like letters and figures of reference indicate corresponding parts inthe different figures of the drawings.

My invention relates more especially to that class of lamp shades whichare designed for incandescent lights; and it consists in certain novelfeatures, as hereinafter fully set forth and claimed, the object beingto produce a more effective and otherwise desirable article of thischaracter than is now in ordinary use.

The nature and operation of the improve ment will be readily understoodby all conversant with such matters from the following OX planation.

In the drawings, A represents the bottom, and B the top, of the shade.The top is composed of sheet metal, preferably tin, and is formed in theshape of a hollow truncated cone having a row or series of holes, at,near its base. The upper portion of the top is flared to form theannular flange wand its bottom provided with an inwardlyprojectingaunular flange, c, which is cutaway in one or more places to form slotsor recesses t.

The bottom A is composed of glass, and is hemispherical in shape, beingground to render it translucent,and provided at its top with one or morehorizontally-arranged outwardlyprojecting flanges, .2, in accordancewith the number of recesses 21 in the flangcc of the top 13. Midwaybetween each pair of the recesses (No model.)

If on the upper side of the flange a there are two rounded projections,d, and disposed above each pair of said projections there is adouble-scroll spring, C, the ends of which are secured to thcinuer faceof' the top B,asshown at 9'. This spring is curved downwardly atitscenter to form a bearingpoint, l), and up wardly at each end, as shownatf, to permit the flanges z to pass readily under it.

In the use of my improvement the shade may be supported by any suitableholder, the burner or light being introduced through the opening in itsupper end at w. The bottom A is secured to the top I by passing theflanges 2 through the recesses t and turning it until each of theflanges is seated on the flange 1) between the members of a pair of theprojections 17, as best seen in Fig. 5. After the flanges :4 have beenpassed through the recesses if, when the bottom A is turned either tothe right orleft, said flanges will be brought into contact with certainof the projections d, and, as said projections are rounded, will rideupwardly over them as said flanges advance, thereby bringing the flangesinto contact with the curved ends f of the spring (J, which will yieldto permit the flanges to pass the projections and drop onto the flange'0 between the same, thereby locking the bottom or preventing it frombecoming accidentally detached from the top in a manner that will bereadily understood by all conversant with such matters without a moreexplicit description.

To remove the bottom A from the top I the bottom may be turned either tothe right or left with sufficient force to overcome the action of thespring 0 and cause the flanges z to be removed from between theprojections d, after which the flanges are advanced until opposite therecesses t, after which the bottom may be withdrawn.

The shade may be used for A rgand and other gasburners by constructingthe glass bottom A with a central opening at y, through which the gaspipe or burner may be passed, the holes at being designed fordraft-openings, through which air may pass to even the flame when theshade is used with a gas-burner.

The top B, being constructed of' tin, serves as a reflector to throw thelight from the burner through the ground-glass bottom A.

Instead of tin, the top may be constructed of brass or other suitablematerial and silvered or polished to cause it to reflect thelightproperly. The bottom may also be constructed 5 of glass, or any materialwhich is sufficiently translucent to produce an effect substantially thesame as ground glass. The form of the bottom and spring may also bevaried, if desired.

Having thus explained my invention, What Ielaimis H pl In a lamp shadeof the character described, the top B, having the inwardly-projectingannular flange 1), provided with the slots or re-

